Fiddler crabs that run about at the edge of the sea darken during the daytime and turn pale at night.
生活在海边的招潮蟹白天体色变深，夜晚变淡。

On the long run the brokerage business is all about risk control, said Thomas Peterffy, our Chairman and CEO.
汤姆斯说长期来说经纪业务的全部其实就是风控。

Then from about 1828 onward would come the black lines of the railways, and after that the little black dots would not simply creep but run.
流感的一大特征是，令你难受的症状不会缓慢出现。

As bin Ladins number two, he learned at the feet of the master, and by some accounts taught his boss much of what he knew about how to run an underground organization.
作为本拉登的追随者，他学习了怎样运作一个地下组织。